Deck 5: Muscles of the Glenohumeral Joint

Question 1

Which are the attachments of the pectoralis major?

A)medial clavicle,sternum,and the costal cartilages of ribs one through seven to the lateral lip of the bicipital groove of the humerus
B)ribs three through five to the coracoid process of the scapula
C)medial clavicle,sternum,and the costal cartilages of ribs one through nine to the medial lip of the bicipital groove of the humerus
D)lateral clavicle,sternum,and the costal cartilages of ribs one through nine to the lateral lip of the bicipital groove of the humerus

Answer 1

A

Question 2

Which muscle attaches onto the medial shaft of the humerus?

A)pectoralis major
B)deltoid
C)supraspinatus
D)coracobrachialis

Answer 2

D

Question 3

Which is an action of the teres minor upon the arm at the glenohumeral joint?

A)abduction
B)flexion
C)medial rotation
D)lateral rotation

Answer 3

D

Question 4

Which are attachments of the deltoid?

A)lateral clavicle,coracoid process,and the spine of the scapula to the deltoid tuberosity of the humerus
B)medial clavicle and the sternum to the deltoid tuberosity of the humerus
C)ribs three through five to the coracoid process of the scapula
D)lateral clavicle,acromion process,and the spine of the scapula to the deltoid tuberosity of the humerus

Question 5

Which is an action of the subscapularis upon the arm at the glenohumeral joint?

A)abduction
B)adduction
C)medial rotation
D)lateral rotation

Question 6

If a muscle crosses the glenohumeral (GH)joint medially,below the center of the joint,with a horizontal orientation to its fibers,what will its action be?

A)flexion of the arm at the GH joint
B)extension of the arm at the GH joint
C)abduction of the arm at the GH joint
D)adduction of the arm at the GH joint

Question 7

If a muscle crosses the glenohumeral (GH)joint laterally (over the top of the joint)with a vertical orientation to its fibers,what will its action be?

A)flexion of the arm at the GH joint
B)extension of the arm at the GH joint
C)abduction of the arm at the GH joint
D)adduction of the arm at the GH joint

Question 8

Which are the attachments of the latissimus dorsi?

A)spinous processes of T7-L5,posterior sacrum,and posterior iliac crest to the medial lip of the bicipital groove of the humerus
B)transverse processes of T7-L5,posterior sacrum,and posterior iliac crest to the lateral lip of the bicipital groove of the humerus
C)spinous processes of T7-L5,posterior sacrum,and posterior iliac crest to the lateral lip of the bicipital groove of the humerus
D)nuchal ligament and the spinous processes of C7-T12,posterior sacrum,and posterior iliac crest to the medial lip of the bicipital groove of the humerus

Question 9

Which are attachments of the subscapularis?

A)subscapular fossa of the scapula to the greater tubercle of the humerus
B)infraspinous fossa of the scapula to the greater tubercle of the humerus
C)subscapular fossa of the scapula to the medial lip of the bicipital groove of the humerus
D)subscapular fossa of the scapula to the lesser tubercle of the humerus

Question 10

Which muscles attach onto the lateral border of the scapula?

A)teres minor and teres major
B)supraspinatus and infraspinatus
C)deltoid and supraspinatus
D)supraspinatus and subscapularis

Question 11

If a muscle crosses the glenohumeral (GH)joint posteriorly with a vertical orientation to its fibers,what will its action be?

A)flexion of the arm at the GH joint
B)extension of the arm at the GH joint
C)abduction of the arm at the GH joint
D)adduction of the arm at the GH joint

Question 12

Which is an action of the supraspinatus upon the arm at the glenohumeral joint?

A)abduction
B)adduction
C)medial rotation
D)lateral rotation

Question 13

Which are attachments of the teres minor?

A)subscapular fossa of the scapula to the greater tubercle of the humerus
B)superior lateral border of the scapula to the lesser tubercle of the humerus
C)superior lateral border of the scapula to the greater tubercle of the humerus
D)inferior medial border of the scapula to the lesser tubercle of the humerus

Question 14

Which are attachments of the supraspinatus?

A)supraspinous fossa of the scapula to the lesser tubercle of the humerus
B)supraspinous fossa of the scapula to the greater tubercle of the humerus
C)subscapular fossa of the scapula to the lateral lip of the bicipital groove of the humerus
D)infraspinous fossa of the scapula to the greater tubercle of the humerus

Question 15

Which is an action of the deltoid upon the arm at the glenohumeral joint?

A)abduction
B)flexion
C)extension
D)all of the above

Question 16

Which muscle is not a member of the rotator cuff group?

A)teres minor
B)subscapularis
C)teres major
D)infraspinatus

Question 17

If a muscle crosses the glenohumeral (GH)joint anteriorly with a vertical orientation to its fibers,what will its action be?

A)flexion of the arm at the GH joint
B)extension of the arm at the GH joint
C)abduction of the arm at the GH joint
D)adduction of the arm at the GH joint

Question 18

Which muscles attach onto the greater tubercle of the humerus?

A)supraspinatus,infraspinatus,and teres major
B)subscapularis,infraspinatus,and teres minor
C)supraspinatus,infraspinatus,and teres minor
D)biceps brachii,brachialis,and brachioradialis

Question 19

Which is an action of the infraspinatus upon the arm at the glenohumeral joint?

A)abduction
B)adduction
C)medial rotation
D)lateral rotation

Question 20

Which muscle attaches onto the lesser tubercle of the humerus?

A)supraspinatus
B)infraspinatus
C)teres minor
D)subscapularis

Question 21

Which one of the four rotator cuff muscles has a thick layer of fascia overlying it?

A)supraspinatus
B)infraspinatus
C)teres minor
D)subscapularis

Question 22

What provides innervation for the latissimus dorsi?

A)thoracodorsal nerve
B)dorsal scapular nerve
C)suprascapular nerve
D)long thoracic nerve

Question 23

Which is an action of the deltoid?

A)flexion of the forearm at the elbow joint
B)abduction of the arm at the glenohumeral joint
C)extension of the forearm at the elbow joint
D)flexion of the hand at the wrist joint

Question 24

What nerve innervates the deltoid?

A)axillary nerve
B)lower subscapular nerve
C)median nerve
D)femoral nerve

Question 25

Which are the four rotator cuff muscles?

A)subscapularis,teres major,latissimus dorsi,and supraspinatus
B)supraspinatus,infraspinatus,teres major,and subscapularis
C)supraspinatus,infraspinatus,teres minor,and subscapularis
D)teres major,teres minor,supraspinatus,and infraspinatus

Question 26

What nerve(s)innervates the supraspinatus?

A)axillary nerve
B)suprascapular nerve
C)sciatic nerve
D)upper and lower subscapular nerves

Question 27

Which are actions of the latissimus dorsi upon the arm at the glenohumeral joint?

A)medial rotation and flexion
B)medial rotation and extension
C)lateral rotation and flexion
D)lateral rotation and extension

Question 28

Which are eccentric functions of the pectoralis major?

A)restrains/slows lateral rotation and extension of the arm at the glenohumeral joint
B)restrains/slows medial rotation and extension of the arm at the glenohumeral joint
C)restrains/slows medial rotation and flexion of the arm at the glenohumeral joint
D)restrains/slows extension of the forearm at the elbow joint and extension of the hand at the wrist joint

Question 29

What nerve innervates the teres minor?

A)axillary nerve
B)suprascapular nerve
C)sciatic nerve
D)lower subscapular nerve

Question 30

Which are actions of the coracobrachialis?

A)abduction and flexion of the arm at the glenohumeral joint
B)adduction and flexion of the arm at the glenohumeral joint
C)flexion and extension of the forearm at the elbow joint
D)adduction and medial rotation of the arm at the glenohumeral joint

Question 31

What provides innervation for the pectoralis major?

A)intercostal nerves
B)medial pectoral nerve
C)lateral pectoral nerve
D)b and c

Question 32

Which are actions of the pectoralis major?

A)medial rotation and flexion of the arm at the glenohumeral joint
B)lateral rotation and flexion of the arm at the glenohumeral joint
C)lateral rotation and extension of the arm at the glenohumeral joint
D)flexion of the forearm at the elbow joint and flexion of the hand at the wrist joint

Question 33

What nerve(s)innervates the infraspinatus?

A)axillary nerve
B)suprascapular nerve
C)sciatic nerve
D)upper and lower subscapular nerves

Question 34

Which is an eccentric function of the infraspinatus upon the arm at the glenohumeral joint?

A)restrains/slows adduction
B)restrains/slows flexion
C)restrains/slows medial rotation
D)restrains/slows lateral rotation

Question 35

Which are actions of the teres major?

A)medial rotation and lateral rotation of the arm at the glenohumeral joint
B)abduction and flexion of the arm at the glenohumeral joint
C)medial rotation and extension of the arm at the glenohumeral joint
D)adduction of the arm at the glenohumeral joint and flexion of the forearm at the elbow joint

Question 36

Which is an eccentric function of the subscapularis upon the arm at the glenohumeral joint?

A)restrains/slows adduction
B)restrains/slows abduction
C)restrains/slows lateral rotation
D)restrains/slows medial rotation

Question 37

What nerve innervates the teres major?

A)axillary nerve
B)lower subscapular nerve
C)median nerve
D)femoral nerve

Question 38

Which is an eccentric function of the teres minor upon the arm at the glenohumeral joint?

A)restrains/slows adduction
B)restrains/slows extension
C)restrains/slows lateral rotation
D)restrains/slows medial rotation

Question 39

What nerve(s)innervates the subscapularis?

A)axillary nerve
B)suprascapular nerve
C)sciatic nerve
D)upper and lower subscapular nerves

Question 40

What nerve innervates the coracobrachialis?

A)median nerve
B)axillary nerve
C)obturator nerve
D)musculocutaneous nerve

Question 41

If a person is doing a pull-up,what would be the action of the biceps brachii and/or the brachialis at the elbow joint in this scenario (when the person is bringing his or her body up toward the bar)?

A)flexion of the forearm at the elbow joint
B)flexion of the arm at the elbow joint
C)extension of the forearm at the elbow joint
D)extension of the arm at the elbow joint

Question 42

The proximal attachments of the deltoid are the same as the lateral attachments of what muscle?

A)latissimus dorsi
B)splenius capitis
C)levator scapulae
D)trapezius

Question 43

The rotator cuff group is considered to function most importantly as

A)movers of the glenohumeral joint.
B)rotators of the glenohumeral joint.
C)fixators (stabilizers)of the glenohumeral joint.
D)antagonists of the glenohumeral joint.

Question 44

Which is (are)a strong horizontal flexor of the arm at the glenohumeral joint?

A)middle deltoid
B)posterior deltoid
C)anterior deltoid
D)all of the above

Question 45

The critical zone of the rotator cuff tendon refers to

A)the distal tendon of the supraspinatus.
B)the proximal tendon of the supraspinatus.
C)the distal tendon of the infraspinatus.
D)the proximal tendon of the subscapularis.

Question 46

What nerve pierces through the coracobrachialis?

A)median nerve
B)musculocutaneous nerve
C)axillary nerve
D)radial nerve

Question 47

Which is true regarding the subdeltoid bursa (also known as the subacromial bursa)?

A)it is located between the supraspinatus portion of the rotator cuff tendon and the acromion process of the scapula and deltoid
B)it is located between the infraspinatus portion of the rotator cuff tendon and the acromion process of the scapula and deltoid
C)it is located between the teres minor portion of the rotator cuff tendon and the acromion process of the scapula and deltoid
D)it is located between the subscapularis portion of the rotator cuff tendon and the acromion process of the scapula and deltoid

Question 48

What muscle is the "T" of "SITS?"

A)triceps brachii
B)teres major
C)teres minor
D)none of the above

Question 49

What muscle of the hip joint can be considered to be analogous to the deltoid,both in shape and location,relative to the joint it crosses and in regard to its actions at its joint?

A)piriformis
B)gluteus maximus
C)gluteus medius
D)tensor fasciae latae

Question 50

Which muscle is in the posterior axillary fold?

A)supraspinatus
B)infraspinatus
C)teres minor
D)teres major